refactor, move code block line feed check to lexer
refactor, move code block line feed check to lexer

Feder1co5oave/marktex,caiyongmin/marked,segmentio/marked,GerHobbelt/kramed,kumu/marked,chickencoder/marked,mrzie/marked,treejames/marked,guypursey/marked,dawsontoth/marked,gjtorikian/namp,martindale/kramed,kwangkim/marked-react,meleslilijing/marked,eush77/remark,emilbayes/kramed,whitefoxx/marked,aniketnandan/marked,chjj/marked,joaomilho/marked,FredrikAppelros/marked,zodiac-xl/marked,zubeio/marked,thejameskyle/marked,Weasyl/marked,cadorn/marked,DigitalCoder/marked,emilbayes/kramed,eush77/remark,shovon/marked,psychoss/marked,Guichaguri/marked,webfby/marked,udacity/marked,papandreou/marked,kitsonk/marked,markuskobler/marked,sooboy/marked,googlearchive/marked,Khan/marked-react,wangyue-ramy/marked,npmcomponent/chjj-marked,yukkurisinai/mdast,ShareMyWorld/marked,nsbawden/marked,Engil/marked,grant-g/marked,psychoss/marked,lazarofl/marked,sahat/marked,helphi/marked,reliefweb/marked,nsbawden/marked,helphi/marked,hujianfei1989/marked,gjtorikian/namp,zhangxx/marked,spicyj/marked-react,dbkaplun/marked,treejames/marked,webfby/marked,gitterHQ/marked,dtinth/marked,zhenghuadai/marked,chcokr/mdast,benqy/marked,yxxme/marked,dchest/marked,qiweiyu/marked,chcokr/mdast,readmeio/marked,dtinth/marked,RemiArnaud/marked,Zhiqing-Lee/marked,weo-edu/marked,amobiz/marked,wercker/marked,mrchimp/mdr-marked,Mignet/marked,whitefoxx/marked,svacha/marked,dawsontoth/marked,drmuey/marked,InnovaCo/marked,tranquangchau/marked,mbranch/marked,codydaig/marked,gingkoapp/marked,aidenzou/marked,ssbc/marked,InnovaCo/marked,zhangxx/marked,kriskowal/marked,guypursey/marked,optimizely/marked,Mignet/marked,hyponymous/marked,gdbooks/kramed,ekoooo/marked,reliefweb/marked,goldenforever/nicemark,hujianfei1989/marked,svacha/marked,kwangkim/marked-react,ShareMyWorld/marked,GerHobbelt/kramed,dbkaplun/marked,vincentwoo/marked,aroneiermann/marked,zubeio/marked,ulrikaugustsson/mdast,codydaig/marked,udacity/marked,Guichaguri/marked,mrzie/marked,Weasyl/marked,axter/marked,RemiArnaud/marked,thlorenz/markdown-ast,grant-g/marked,takezoe/marked,zodiac-xl/marked,hgGeorg/marked,martindale/kramed,axter/marked,mbranch/marked,YaqubGhazi/marked,hyponymous/marked,YaqubGhazi/marked,gdbooks/kramed,DigitalCoder/marked,yukkurisinai/mdast,GitbookIO/kramed,Ponyshow/pony-render,benqy/marked,huiop368/marked,isaacs/marked,FredrikAppelros/marked,mrchimp/mdr-marked,aidenzou/marked,cadorn/marked,JTKnox91/marked,kitsonk/marked,ericlifka/marked,Feder1co5oave/marktex,tanzania82/remarks,lazarofl/marked,markuskobler/marked,meihuabo/marked,drmuey/marked,shovon/marked,kangax/marked,yxxme/marked,modulexcite/marked,joaomilho/marked,sahat/marked,gitterHQ/marked,modulexcite/marked,qiweiyu/marked,JTKnox91/marked,bobby-brennan/marked,amobiz/marked,chickencoder/marked,bobby-brennan/marked,ekoooo/marked,Jucyio/marked,gingkoapp/marked,kumu/marked,slang800/marked,readmeio/marked,wangyue-ramy/marked,vincentwoo/marked,phiggins42/marked,caiyongmin/marked,jonschlinkert/remarked,sooboy/marked,kangax/marked,zhenghuadai/marked,aroneiermann/marked,Jucyio/marked,bantic/marked,Engil/marked,hgGeorg/marked,papandreou/marked,Baekjoon/marked,GitbookIO/kramed,wooorm/remark,tranquangchau/marked,thejameskyle/marked,googlearchive/marked,meleslilijing/marked,weo-edu/marked,Baekjoon/marked,aniketnandan/marked,bantic/marked,meihuabo/marked,takezoe/marked,ssbc/marked,Zhiqing-Lee/marked,LinuxBasic/react-marked,chjj/marked,wercker/marked,huiop368/marked,ulrikaugustsson/mdast